Traverse motion for yarn-spinning apparatus.



A. E. RHOADBS.

TRAVERSE MOTION FOR YARN SPINNING APPARATUS.

APPLICATION FILED 1101!.17. 1909.

Patented Apr.5,1910.

3 SHEETS-SHEET 1.

A. E. RHOADES.

TRAVERSE MOTION FOR YARN SPINNING APPARATUS.

APPLICATION FILED HOV. 17, 1909.

Patented Apr. 5, 1910.

3 SHEETS-SHEET 2.

ANOREW a amhm c0 wowudwoou mw wa'mmmcn p A. E. RHQADES.

TRAVERSE MOTION FOR YARN SPINNING APPARATUS.

APPLIUATION TILED NOV. 17, 1909. 95%343 Patented Apr. 5, 1910.

3 SHEETS-SHEET 3.

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UNITE STATE? PLATENT FFICE ALONZO E. RHOADES, OF HOPEDALE,MASSACHUSETTS, ASSIGNOR TO DRAPER COM- PANY, OF I'IOPEDAEE,MASSACHUSETTS, A CORPORATION OF MAINE.

TRAVERSE MOTION FOR YARN-SPINNING APPARATUS.

Specification of Letters Patent.

Patented Apr. 5, 1910.

Application filed November 17, 1909. Serial No. 528,431.

1 '0 all whom it may Concern:

Be it known that I, ALoNzo E. RIIOADES, a citizen of the United States,and resident of I-Iopedale, county of \Vorcester, State ofMassachusetts, have invented an Improvement in Traverse Motions forYarirSpin- .ning Apparatus, of which the following description, inconnection with the accompanying drawing, is a specification, likecharacters on the drawing representing like parts.

This invention has for its object the production of a novel traversemotion for yarn spinning apparatus of the type wherein the yarn is woundupon a yarn-receiver or bobbin in such manner that a primary winding isfirst laid, and thereafter a secondary or main winding to complete thebuilding of the yarn-mass. Bobbins so wound are generally designed foruse in automatic fillingreplenishing feeler looms, the change of fillingtherein being effected through the instrun'ientality of a feeler whenthe yarn has been woven oif to a predetermined extent, a sufficientlength of yarn being contained in the primary winding to preservecontinuity of filling when filling-change is effected.

This primary windin should not be confounded with the so-calledcop-bottom found in the spinning art, as it is altogether differenttherefrom in character and function, the ideal primary winding,sometimes termed the bunch being composed of several layers or wraps ofyarn practically cylindrical in shape and tapered at its ends, while thecop-bottom is a substantially pearshaped or conical winding of yarnwhich, as its name implies, forms the bottom of the cop.

The yarn should be so laid that in the weaving operation it will drawoff easily and freely from the bobbin at all times, even when closelyapproaching the primary winding, and afterward, or yarn breakage willoccur. For that reason the lower end of the primary winding, adjacentthe base or head of the bobbin, must not be too abrupt or square, and itis highly desirable that in such winding the yarn shall not be crowdedupon itself to make an unduly thick mass, but shall lie evenly andsmoothly, in order to avoid catching and breakage. That is, thecontiguous turns of yarn in the several layers or wraps of the primarywinding should be laid with the same uniformity and evenness as they arelaid in the formation of the secondary or main winding, but this hasheretofore been dillicult to effect because of the relatively shorttraverse (about fiveeighths of an inch, in practice) with which theprimary winding is laid.

In United States Patent No. 941,648 granted to me on the thirtieth dayof November, 1909, I show and describe a traverse motion wherein theprimary winding is laid with a short and gradually increasing traverseup to a predetermined point, after which the winding is completed with atrav erse of uniform length, the speed of the traverse being uniformthroughout the entire winding, but the gain of the traverse diminishesgradually from maximum to minimum during the formation of the primarywindin As the yarn is delivered to the bobbins at a uniform speed duringthe winding operation it will be readily understood that if thering-rail reciprocates at uniform speed the yarn must be crowded orpiled up on itself to a greater extent during short traverse than willbe the case when the traverse is lengthened, and the decrease of thegain in my patent just referred to prevents too much yarn being laid atthe lower end of the bobbin.

In my present invention I lnwe provided means whereby the yarn in theprimary winding is laid with substantially the same evenness as pertainswhen the main winding is laid, so that the highly desirable smooth andsubstantially cylindrical contour of the primary winding is attained.Inasmuch as crowding and piling up of the yarn tends to breakage duringthe weaving operation such objection is thereby overcome and novariation in the yarn is necessary throughout the winding operation.

I have embodied herein the means shown in my patent for effectinggradually increasing traverse during the formation of the primarywinding, and in connection therewith I. have provided novel means toeffect the reciprocation of the ring-rail at maximum speed at thebeginning, the speed being gradually decreased as the formation of theprimary winding progresses. Vhen such winding is completed the speed ofthe ring-rail has attained its minimum. and the secondary or mainwinding is laid at such minimum speed, while the traverse is uniform orconstant during such winding. Thus in my present invention the traversegradually increasing from minimum to maximum, and ring-rail speedincreasing gradually from maximum to minimum, cooperate to build theprimary winding with smooth and even turns of the yarn in the severallayers without crowding, and as there is no tendency to pile up the yarnat the ends of the primary winding the gradual taper thereat is effectedby means of a uniform gain.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Figure 1 is a front elevation of a portion of a spinning-frame havingone embodiment of my present invention applied thereto, the apparatusbeing shown in readiness to be gin the winding of a set of bobbins; Fig.2 is a transverse sectional view taken on the line 22, Fig. 1, lookingtoward the left and partly broken out; Fig. 3 is a top plan view of thespeed-changing means governing the speed of the ring-rail; Fig. 4 is afront elevation of the beltshifter illustrated in Figs. 2 and 3, thespeed-cones being omitted; Fig. 5 is a transverse section of thebelt-shifter, on the line 55, Fig. 4, looking toward the left; Fig. 6 isa side elevation of the builder-motion shown in Fig. 1 but detached fromthe other parts of the apparatus; Fig. 7 is a side elevation of a bobbinwith a small portion of yarn wound thereon, shortly after the beginningofthe primary winding, the completed or full bobbin being'indicated bydotted lines.

The spindle-rail 1 provided with usual rotatable spindles for thebobbins 2, the vertically reciprocating ring-rail 3 in practice providedwith rings 4, the lifter rods, as 5, rocker 6 having a lifting weight 7to elevate the ring-rail, the rocker-arm 8 and link 9, and the branch 10of arm 8, are all of usual construction and operate in well knownmanner. A flexible connection or chain 11 attached to the branch 10passes over the guide-sheave 12, Figs. 1 and 2, and thence to thewinding drum of the builder-motion, the latter herein comprehending thelevers 13, 18, the former fulcrumed at 14, and having an extension 15and a roller or other stud 16, at opposite. sides of the fixed fulcrum,the roller constituting a follower to cotiperate with the actuator,shown in Fig. 2 as a four-point traverse-cam, substantially as in mypatent referred to, the weight W holding'the follower against the'cam.So,

too, the lever or member 18, having a fixed fulcrum 19 behind thefulcrum 14 and substantially in the same plane, is as set forth in mypatent. stant stroke, as will be manifest, while the member 18 hasavariable stroke, the weight The member 13 has a con- 7 lifting its freeend while it is depressed by the member 13 as it descends. The pickshaft26, pick-wheel 28 and worm 31 fast thereon, the worm-gear 32, Fig. 1,driven by said worm and having fixedly connected with it the drum 33 ofthe winding mechanism mounted at 34 011 the member 18, the chain 11passing around the drum and being gradually let off therefrom as thewinding proceeds; the mutilated gear 35 on the drum and cooperatingwiththe rack-bar 36, pivotally connected with the link 39 fulcrumed at40 on the member 18; the roll-carrier 43 connected with the upper end ofthe link, ann provided with the rolls 45, 46, the latter cooperatingwith the under side of the member 13, and the roll 45 bearing on therest 47 mounted on the member 18, are in general as in my patent, exceptthat here in the extension of the free end of the member 13 is omittedand the upper end of the link 39 is prolonged, at a, for a purpose to bedescribed, said prolongation having a series of holes 64 therein. lVhilethe stroke of the member 18 increases gradually in amplitude it will beobserved that said member rises to practically the same point on eachup-stroke, owing to the nearly horizontal position of the rest 47 whenthe member 18 is at the upper end of its stroke, and I have hereincaused the means for actuat ing the pick-wheel to be controlled by themember 18 and actuated on the up stroke thereof.

Referring to Figs. 1 and 2, the pick-pawl 27' is attached to the lowerend of a rod 25 depending from and passing through a hole in a part ofthe side rail of the main frame, the rod being screw-threaded to receivecol lars or nuts 23, 24, screwed onto the rod above and below the rail,respectively, by means of which the vertical position of the pawl can beadjusted. Oneach up-stroke of the member 18- the pick-wheel 28' isbrought into engagemept with the pawl 27 and is partly turned orangularly advanced, the resilience of the rod or. pawl-carrier 25permitting the slight lateral movement of the pawl when it is engagingand turning the pick-wheel, and as the angular advances thereof areuniform, for the reasons above stated, the step by step rotation of thepickshaft 26 and the parts actuated thereby will be uniform incharacter. Consequently the letting off of the chain 11 from the drum 33will be by equal amounts and the resultant gain of the traverse will beconstant from beginning to end of the entire winding operation.

The rotation of the shaft 26 operated through the mutilated gear 35 andrack-bar 36- to swing forward the link 39 from the position shown inFigs. 2 and 6, and thereby the rolls 45, 46 will be moved away from thefulcrum 14, so that while the stroke of the member 13 of thebuilder-motion is constant. the oscillating movement imparted to themember 18 will gradually increase in amplitude as the rolls move towardthe free ends of the members 13, 18 and the traverse of the ring-railwill be gradually increased, as in my patent above referred to. Thus theprimary winding of yarn is begun with the minimum traverse, and thetraverse is gradually increased up to the point at which the mutilatedgear no longer advances the 'ack-bar 36, the link 39 ceasing itsswinging movement on its fulcrum 40 at the same time, and thereafter thetraverse is uniform, the secondary or main winding being laid therewith.The gradual and desired taper at the ends of the primary winding ofyarn, is properly formed by the gain of the traverse, which at thebeginning of such Winding has a length of about five-eighths of an inchand works up to the full length, say about one and five-eighths of aninch, by the time the primary winding is completed.

I will now describe the means by which the yarn is laid evenly withoutcrowding during the primary winding.

Referring to Fig. 2 the shaft of the usual spindle-driving cylinder itoperates through the train of gearing A, A A to drive the largeintermeshing gears 13, B, the latter in practice being suitablyconnected with the drawing rolls, (not shown) as is usual in apparatusof this character, such gearing be ing contained within the inclosed endA of the frame. The shaft of one of the gears 13 is provided with asprocket C, connected by a sprocket-chain D with a larger sprocket Efast on one end of a horizontal shaft- F extended longitudinally of themain frame, a parallel shaft G being arranged near it, said shafts beingbelow and at one side of the cylinder A and outof the way of the usualspindle-driving bands. Opposed speed cones F, G are mounted on these twoshafts and connected by a belt H which is arranged to be shiftedlongitudinally to thereby vary the speed of the shaft G, as it will bemanifest that the shaft F is rotated at a constant speed.

When the belt is near the larger end of the driving cone F Figs. 1 and2, it cooperates with the smaller end of the driven cone Gr andconsequently the latter will be driven at a higher speed, whereasshifting of said belt to the left, Fig. 1, will effect a gradualreduction in the speed of the driven cone and its shaft G. Such beltshifting is effected automatically as will be described, during theformation of the primary winding of yarn. A. pinion K fast on shaft Gmeshes with a larger gear L, see dotted lines Fig. 2, having an attachedpinion H in mesh with a large gear N fast on the shaft of the actuatoror traverse-cam 17, and it will now be understood that the speed ofrotation of such cam will be governed by the speed-changing means just:described, the revolutions of the cam increasing or decreasing in speedas the speed of the cone G" rises or falls. The trains of gears referredto, and the sprockets and connecting sprocket-chain, are inclosed withinthe frame end A". A belt-shifter it", provided with forks f, 1*, islongitudinally slidable upon fixed guide-rods h, 71 suitably sustainedat their ends by the main frame between the cones, a weight it connectedby a chain If with the belt--shifter effecting movement thereof to theright, Fi 's. 1 and 3, said chain passing over a guid e-sheave h. Themovement of the belt-shifter in the opposite direction, or to the left,Figs. 1 and 3, is etl'eeted automatically by means of the chain or otherflexible connection it" attached at its opposite ends to the belt-shifteand the link-cxtensi0n a, respectively, said connection passing aroundsuitable guide-sheaves it, It, shown clearly in Fig. 3. By hooking thechain it" into a lower or an upper one of the holes a in the extension athe primary winding will be started with a somcwhat lower or higherspeed, respectively, the position of the link-extension at the time theprimary winding is begun being shown in Fig. 9 very clearly. It will beobvious that at such time the traverse-cam 17 will be rotated at itsmaximum speed, because the belt II is at the larger end of the drivingcone F and therefore the speed of the ringrail will be at its maximumwhen the traverse is at its minimum, the speed of the rail then causingthe yarn to be laid smoothly and evenly, with the adjacent turns of yarnin a layer laid side by side, withoutcrowding or piling up. As themovement of the link 39 on its pivot 10 serves to gradually increase thetraverse such movement also acts, through the connection It, togradually move the belt-shifter M and thereby shift the belt ll alongthe cones so that the speed of the ring-rail slightly decreases toaccommodate the lengthened traverse. Thus each layer or wrap of yarn inthe primary winding will be laid smoothly and evenly, and when thetraverse reaches its maxinuun the speed of the rail will have attainedits minimum and there will be no further shifting of the belt ll duringthe formation of the secondary or main winding. That is as it should be,for as the traverse is then uniform the speed of the ringrail should beuniforn'i, to correspond, and the layers of yarn are laid smoothlyduring the formation of the main winding. The entire yarn-mass is thusbuilt up by successive layers of smoothly and evenly laid yarn, so thatin the weaving operation the yarn will draw oil" freely without anytendency to catch or break when the primary winding is approached. Asthe rail-speed is made to properly conform to the length of the traversethe uniform gain throughout the entire wlnding operation takes care ofthe shaping of the yarn-mass, the completed modifications may be made bythose skilled in the art without departing from the spirit and scope ofmy invention asset forth in the claims annexed hereto.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In apparatus of the class described, abuilder-motion including a member having a constant stroke and a memberhaving a variable stroke, an actuator cooperating with one of saidmembers to effect oscillation of both the said members, a reciprocatingring-rail, a connection between it and the builder-motion, meanscooperating with the two members thereof and acting through saidconnection to effect reciprocation of the ring-rail with a graduallyincreasing traverse to a predetermined point, and thereafter to continueautomatically the reciprocation of the ring-rail with a uniformtraverse, and mechanism to drive said actuator at a speed graduallydecreasing from maximum to minimum during the period of increasingtraverse.

2. In apparatus of the class described, a builder-motion including amember having a constant stroke and a member having a variable stroke, areciprocating ring-rail, a single connection between it and the saidmember having a variable stroke, means whereby the first-named memberacts, through its fellow member and through said connection, to efieotreciprocation of the ring-rail with a traverse gradually increasing to apredetermined maximum, and thereafter to continue automatically suchreciprocation with a uniform traverse, and an instrumentality togradually reduce the speed of the ring-rail from maximum to minimumduring the period of increasing traverse. v

3. In apparatus of the class described, means to effect the winding ofyarn upon a yarn-receiver with a traverse gradually in creasing fromminimum to maximum and to complete the winding with the maximumtraverse, and means to control the speed of the traverse and graduallydecrease it from maximum to minimum and continue the speed at theminimum during the period of maximum traverse.

I. In apparatus of the class described, a buildermotion including anoscillating member having a variable stroke, means to gradually increasethe amplitude of its stroke to a predetermined maximum, a reciprocatingring-rail operatively connected with said member and by it reciprocatedwith a gradually increasing traverse to the maximum, and a variablespeed actuating instrumentality for the builder-motion, governed by themember of the latter having a variable stroke, to act through thebuilder motion and decrease the speed of the ringrail as the traverseincreases.

5. In apparatus of the class described, a builder-motion, a rotatableactuator therefor, a reciprocating ring-rail, means operativelyconnecting it with the builder-motion, and through said builder-motionreciprocating the ring-rail first with a gradually increasing traverseand thereafter with a uniform traverse, and an instrumentality governedby said builder-motion to rotate the actuator at a variable speed andacting through the builder-motion to gradually and automaticallydiminish the speed of the ring-rail from maximum to minimum during thegradual increase of the traverse from minimum to maximum.

6. In apparatus of the class described a builder-motion including twooscillating, separately fulcrumed members, an actuator to oscillate onemember with a constant stroke, means to effect oscillation of the othermember with a stroke gradually increasing up to a predetermined maximum,a reciprocating ring-rail, a connection between it and the member havingthe variable stroke, automatically operated mechanism to control saidmeans and cause the latter to effect the increase in the stroke of thesecond-named member, said mechanism imparting a substantially uniformgain to the traverse, and an instrumentality controlling the actuatorand through it gradually decreasing the speed of the ring-rail to apredetermined minimum.

7. In apparatus of the class described a compound builder-motionincluding two separately fulcrumed members, an actuator to oscillate oneof said members with a constant stroke, speed changing mechanismoperatively connected with and to govern the speed of the actuator,shiftalole means cooperating with said rocking members whereby thesecond of said members is oscillated with a gradually increasing strokeup to a predetermined maximum, a reciprocating ring-rail connected withsaid member hav ing the variable stroke whereby the ringrail isreciprocated with a traverse gradually increasing to a maximum, and acontrolling connection between said shiftable means and the speedchanging mechanism to act through the latter and cause the speed of theactuator, and hence the speed of the ring rail, to gradually diminishwhile the traverse increases.

8. In apparatus of the class described, means, including a reciprocatingring-rail to effect the winding of yarn upon a yarn-receiver with atraverse gradually increasing from minimum to maximum and to completethe winding with the maximum traverse, means to cause the ring-rail totravel at a speed varying in an inverse ratio to the variation in thelength of the traverse.

9. In apparatus of the class described, means, including abuilder-motion and a reciprocating ring-rail to effect automatically thewinding of yarn upon a yarn-receiver with the gradually increasingtraverse to a predetermined maximum, and thereafter to complete thewinding with such maximum traverse, an actuator for said means,cooperating with the builder-motion, and means to gradually andautomatically reduce the speed of the actuator and thereby the speed ofthe ring-rail during the period of gradually increasing traverse, andthereafter to maintain the speed of the ring-rail constant.

10. In apparatus of the class described, means, including areciprocating ring-rail to effect the winding of yarn upon ayarnreceiver with a traverse gradually and uniformly increasing fromminimum to maximum to complete the winding with such maximum traverse,means to impart a substantially uniform gain to the traverse throughoutthe winding, and mechanism to gradually change the speed of thering-rail from maximum to minimum during the gradually increasingtraverse, and an instrumentality to govern automatically the change fromminimum to maximum traverse and contemporaneously therewith to controlthe varying speed of the ring-rail.

11. In apparatus of the class described in combination, a builder-motionincluding an oscillating member, an actuating device to impart aconstant stroke thereto, means actuated by said member to effectautomatically the formation of two successive windings of yarn upon ayarn-receiver, the first winding being laid with a gradually increasingtraverse and with a gradual decrease in the speed of the ringq-ail, thesecond winding being laid with a uniform traverse and with a uniformspeed of the ring-rail, and an instrumentality cooperating with saidactuating device to control the variation in the speed of the ring-rail.

12. In apparatus of the class described, in combination, abuilder-motion including an oscillating member having a constant stroke,

two different means to effect, respectively, the formation of a windingof yarn upon a yarn-receiver with a traverse gradually increasing fromminimum to maximum, and to gradually decrease the speed of the traversefrom maximum to inininuun, one of said means being directly actuated byor through said oscillating member, and the other of said meanseffecting the oscillation of said member, and a controlling connectionbetween said separate means whereby the operation of one is governed byor through the operation of the other.

12-3. In apparatus of the class described, a builder-motion including anoscillating member having a constant stroke, and means actuated by saidmember to effect automatically the formation of two successive windingsof yarn upon a yz'trna'eceiver, the first winding with a graduallyincreasing traverse, combined with automatic means to gradually decreasethe speed of the t 'averse during the first winding and to maintain thespeed uniform during the second winding.

14;. In apparatus of the class described, a builder-motion including anoscillating member having a constant stroke, and means actuated by saidmember to effect automatically the formation of two successive windingsof yarn upon a yarn-receiver, the first winding with a graduallyincreasing traverse, said means including a traverse-shifting device todetermine the rate of such i11- crease, combined with variable speedmechanism to actuate said oscillating member and decrease the speed ofthe traverse as the traverse increases, and controlling means for thespeed changing mechanism governed by the traverse-shifting device.

15. In apparatus of the class described, a buildermotion including anoscillating member having a constant stroke, and a second oscillatingmember having a variable stroke, and shiftable means intermediate saidmembers to effect a gradual increase in the stroke of the second-namedmember up to a predetermined maximum, and thereafter to effect theoscillation of said member with a uniform stroke, a ring-railoperatively connected with and reciprocated by said latter member withfirst a gradually increasing, and then a uniform, traverse, combinedwith a device to govern the operation of said shiftable means, andmechanism controlled by said shiftable means and acting through thebuilder-motion to gradually reduce the speed of the ring-rail as itstraverse increases and to maintain the speed of the ring-rail uniformwhen the traverse is uniform.

16. The combination with a reciprocating ring-rail and a builder-motionincluding two oscillating members one of which has a constant stroke andan actuating cam to impart such constant stroke, of a connection betweenthe other member and the ring-rail to control the movement of thelatter, meansthe speed of the ringrail during such period of increasingtraverse.

17. The combination with a reciprocating ring-rail, a builderunotionincluding two oscillating members, and a connect-ion between one of saidmembers and the ringrail, of means whereby said members are oscillatedwith a' differential movement gradually decreasing from a maximum to aminimum, the member connected with the ring-rail thereafter beingoscillated with a uniform stroke, and an instrumentality controlled bythe variation in the length of the traverse to begin the reciprocationof the ring-rail at maximum speed and to gradually diminish such speeduntil the traverse attains its maximum.

18. The combination, with a reciprocating ringrail, of a builder-motion,an actuating cam therefor, and a connection between the builder-motionand the ringrail, of means carried by the builder-motion to impart tothe ring-rail first a gradually increasing traverse up' to apredetermined maximum and thereafter a traverse of uniform length, aninstrumentality to rotate the actuating cam at a speed decreasinggradually from maximum to minimum while the traverse is increasing inlength and means to control automatically the variable speed of theactuating cam.

19. In apparatus of the class described means to effect the winding ofyarn upon a yarn-receiver with a traverse gradually increasing fromminimum to maximum and to complete the winding with a maximum traverse,means to decrease gradually the speed of the traverse from maximum tominimum during theperiod of gradually increasing traverse, and means tovary the initial speed of the traverse at the beginning of the windingof yarn.

20. In apparatus of the class described, a builder-motion including anoscillating member having a constant stroke andmeans actuated by saidmember to effect automatically the formation of two successive windingsof yarn upon a yarn-receiver, the first winding with a graduallyincreasing traverse, combined with means to gradually decrease the speedof the traverse during the first winding, and to maintain the speeduniform during the second winding, and a manually adjustable device toincrease or decrease the initial speed of the traverse at the beginningof the first winding.

In testimony whereof, I have signed my name to thisspecification, in thepresence of two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses G. L. BELL, E. D. Oseoon.

